KNN query is not logged properly

[sanikolaev]

Bug Description:

mysql> select id, knn_dist() from test where knn ( image_vector, 5, (0.286569,-0.031816,0.066684,0.032926), 2000 );
+------+------------+
| id   | knn_dist() |
+------+------------+
|    1 | 0.28146550 |
|    2 | 0.81527930 |
+------+------------+
2 rows in set (0.00 sec)
--- 2 out of 2 results in 3ms ---

is logged as:

/* Sat Nov 30 18:07:30.935 2024 conn 18169 (127.0.0.1:52399) real 0.003 wall 0.003 found 2 */ SELECT id, knn_dist() FROM test;

i.e. the knn() params get missed.

Manticore Search Version:

Manticore 6.3.9 c96df395d@24112911 dev (columnar 2.3.1 edadc69@24112219) (secondary 2.3.1 edadc69@24112219) (knn 2.3.1 edadc69@24112219)

Operating System Version:

Ubuntu Jammy (dev2)

Have you tried the latest development version?

Yes

Internal Checklist:

^{To be completed by the assignee. Check off tasks that have been completed or are not applicable.}

• Implementation completed
• Tests developed
• Documentation updated
• Documentation reviewed
• Changelog updated

[smellbee]

I suggest using a config parameter to disable log knn float points, coz, there are always high dimensional vectors (768, 1024,1536, etc) which is quite big, which adds obvious overhead

[sanikolaev]

I suggest using a config parameter to disable log knn float points, coz, there are always high dimensional vectors (768, 1024,1536, etc) which is quite big, which adds obvious overhead

There's sphinxql:compat logging mode:

• which can be adapted to this case
• should be documented well